Highlighter pen



FIG. 1 is a perspective view of a highlighter pen showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof, the right view being a mirror image;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is an exploded perspective view thereof. 

The ornamental design for a highlighter pen, as shown and described. 